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 ###Instrução: Quantos motores b5234 t3?
 ###Tabelas: CREATE TABLE list_of_tallest_buildings (list_of_tallest_buildings_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Name VARCHAR, Height VARCHAR, Highest floor INT, City VARCHAR, Primary use VARCHAR) CREATE TABLE tracklist (tracklist_id AUTO_INCREMENT PRIMARY KEY, Artist/Band VARCHAR, Song VARCHAR, Disney affiliated VARCHAR, Released INT, US exclusive VARCHAR, EU exclusive VARCHAR) CREATE TABLE models_and_engines (models_and_engines_id AUTO_INCREMENT PRIMARY KEY, model VARCHAR, max. motive power VARCHAR, max. torque at rpm VARCHAR, engine displacement VARCHAR, engine type VARCHAR, engine configuration & notes 0-100km/h VARCHAR) CREATE TABLE group_b_relegation (group_b_relegation_id AUTO_INCREMENT PRIMARY KEY, Position INT, Club VARCHAR, Played INT, Points VARCHAR, Wins INT, Draws INT, Losses INT, Goals for INT, Goals against INT, Goal Difference INT) CREATE TABLE doubles:_11_5_titles_6_runners-up (doubles:_11_5_titles_6_runners-up_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Date VARCHAR, Surface VARCHAR, Partner VARCHAR, Opponents VARCHAR, Score VARCHAR)  
SELECT COUNT model FROM models_and_engines WHERE engine type = B5234 T3